2 X 30W AUDIO POWER AMPLIFIER   This small amplifier is constructed with the TDA1521 IC, with a maximum supply capability of 2 x 15Wrms (4ohm) of 2 x 10Wrms (8ohm). The IC is thermally and short-circuit protected. Additional rectifier and smoothing filter are unnecessary, as alternating current can be directly connected to the unit.  Specifications music power output: 2 x 30W / 4ohm RMS output: 2 x 15Wrms / 4ohm or 2 x 10Wrms / 8ohm total harmonic distortion: 0.07% (1W / 1kHz) channel separation: 70dB frequency response: 7Hz to 60kHz (-3dB) signal-to-noise ratio: 98dB (A weighted) input sensitivity: 300mV / 150Kohm transient suppression on/off switch overload and short-circuit protection: max. 1h supply voltage: 2 x 12Vac / 2A (50W transfo recommended) dimensions: 70 x 50mm (2.8" x 2.0") recommended transformer: 212048 or 5012